Chip-on-film and display device

Abstract

A chip-on-film includes a flexible substrate, a plurality of negative polarity pins, and a positive polarity pin. The plurality of negative polarity pins are arranged in a row in a first direction on the flexible substrate, and two adjacent negative polarity pins of the plurality of negative polarity pins are arranged in an interval. The positive polarity pin is disposed on the flexible substrate. The positive polarity pin is at least partially located between two adjacent negative polarity pins of the plurality of negative polarity pins. The positive polarity pin includes a first extension portion and a second extension portion. The first extension portion intersects the second extension portion.

What is claimed is: 
     
         1 . A chip-on-film comprising:
 a flexible substrate;   a plurality of negative polarity pins arranged in a row in a first direction on the flexible substrate, and two adjacent negative polarity pins of the plurality of negative polarity pins arranged in an interval; and   a positive polarity pin disposed on the flexible substrate, the positive polarity pin being at least partially located between two adjacent negative polarity pins of the plurality of negative polarity pins, the positive polarity pin comprising a first extension portion and a second extension portion, the first extension portion intersects the second extension portion.   
     
     
         2 . The chip-on-film as claimed in  claim 1 , wherein the first extension portion extends in the first direction, the second extension portion extends in a second direction, and the first direction is perpendicular to the second direction. 
     
     
         3 . The chip-on-film as claimed in  claim 2 , further comprising two pin groups disposed along the first direction at an interval, each of the pin groups comprises multiple negative polarity pins of the plurality of negative polarity pins, and two adjacent negative polarity pins in each pin group are disposed along the first direction at an interval,
 wherein the positive polarity pin is at least partially located between the two pin groups that are adjacent to each other, and in the first direction, a distance between two adjacent negative polarity pins of the plurality of negative polarity pins is less than a distance between the two pin groups.   
     
     
         4 . The chip-on-film as claimed in  claim 3 , wherein both the first extension portion and the second extension portion are located between two adjacent negative polarity pins of the plurality of negative polarity pins. 
     
     
         5 . The chip-on-film as claimed in  claim 4 , wherein a middle portion of the first extension portion is connected with a middle portion of the second extension portion. 
     
     
         6 . The chip-on-film as claimed in  claim 2 , wherein the first extension portion is connected to one terminal of the second extension portion. 
     
     
         7 . The chip-on-film as claimed in  claim 6 , wherein the plurality of negative polarity pins are arranged in a plurality of rows, and the negative polarity pins in two adjacent rows of the plurality of rows are arranged at an interval to form an accommodation area, and
 wherein the first extension portion is located in the accommodation area, and the second extension is located between two adjacent negative polarity pins of the plurality of negative polarity pins.   
     
     
         8 . The chip-on-film as claimed in  claim 1 , wherein the number of positive polarity pins is at least two, the two positive polarity pins are disposed at an interval, each of the positive polarity pins is located between two adjacent negative polarity pins of the plurality of negative polarity pins. 
     
     
         9 . The chip-on-film as claimed in  claim 1 , wherein a length of the first extension portion ranges from 0.5 mm to 5 mm, and a length of the second extension portion ranges from 0.7 mm to 1.5 mm. 
     
     
         10 . A display device comprising:
 a light-emitting substrate; and   a chip-on-film, one terminal of the chip-on-film is bonded to the light-emitting substrate, the chip-on-film comprising:
 a flexible substrate; 
 a plurality of negative polarity pins arranged in a row in a first direction on the flexible substrate, and two adjacent negative polarity pins of the plurality of negative polarity pins arranged in an interval; and 
 a positive polarity pin disposed on the flexible substrate, the positive polarity pin being at least partially located between two adjacent negative polarity pins of the plurality of negative polarity pins, the positive polarity pin comprising a first extension portion and a second extension portion, the first extension portion intersects the second extension portion. 
   
     
     
         11 . The display device as claimed in  claim 10 , wherein the first extension portion extends in the first direction, the second extension portion extends in a second direction, and the first direction is perpendicular to the second direction. 
     
     
         12 . The display device as claimed in  claim 11 , wherein the chip-on-film further comprises two pin groups disposed along the first direction at an interval, each of the pin groups comprises multiple negative polarity pins of the plurality of negative polarity pins, and two adjacent negative polarity pins in each pin group are disposed along the first direction at an interval,
 wherein the positive polarity pin is at least partially located between the two pin groups that are adjacent to each other, and in the first direction, a distance between two adjacent negative polarity pins of the plurality of negative polarity pins is less than a distance between the two pin groups.   
     
     
         13 . The display device as claimed in  claim 12 , wherein both the first extension portion and the second extension portion are located between two adjacent negative polarity pins of the plurality of negative polarity pins. 
     
     
         14 . The display device as claimed in  claim 13 , wherein a middle portion of the first extension portion is connected with a middle portion of the second extension portion. 
     
     
         15 . The display device as claimed in  claim 11 , wherein the first extension portion is connected to one terminal of the second extension portion. 
     
     
         16 . The display device as claimed in  claim 15 , wherein the plurality of negative polarity pins are arranged in a plurality of rows, and the negative polarity pins in two adjacent rows of the plurality of rows are arranged at an interval to form an accommodation area, and
 wherein the first extension portion is located in the accommodation area, and the second extension is located between two adjacent negative polarity pins of the plurality of negative polarity pins.   
     
     
         17 . The display device as claimed in  claim 10 , wherein the number of positive polarity pins is at least two, the two positive polarity pins are disposed at an interval, each of the positive polarity pins is located between two adjacent negative polarity pins of the plurality of negative polarity pins. 
     
     
         18 . The display device as claimed in  claim 10 , wherein a length of the first extension portion ranges from 0.5 mm to 5 mm, and a length of the second extension portion ranges from 0.7 mm to 1.5 mm. 
     
     
         19 . A chip-on-film comprising:
 a flexible substrate;   a plurality of negative polarity pins, arranged in a row in a first direction on the flexible substrate, each of the plurality of negative polarity pins extending in a second direction; and   a positive polarity pin, disposed on the flexible substrate and located between two negative polarity pins of the plurality of negative polarity pins, a shape of the positive polarity pin is different from a shape of the negative polarity.   
     
     
         20 . The chip-on-film as claimed in  claim 19 , wherein the positive polarity pin comprises a first extension portion extends in the first direction and a second extension portion extends in the second direction perpendicular to the first direction.